One common problem operators face when using lime slurry is:

Lime slurry is often used in wastewater treatment for various purposes, such as pH adjustment and stabilization of sludge. One common problem associated with lime slurry is plugging of feed lines. This issue typically arises due to the nature of lime, which can precipitate and form solid particles when it reacts with water or other components in the system.

When operators introduce lime slurry into the feed lines, it can settle and harden, particularly if there is insufficient mixing or if the slurry is left standing for too long. This can lead to blockages in the pipes, which not only disrupts the flow of materials but also may require manual intervention to clear the lines. Understanding and addressing this issue is crucial for maintaining operational efficiency and ensuring consistent treatment processes in wastewater facilities.

The other options, while they may present challenges in different contexts, are not as commonly associated with lime slurry specifically. For example, excessive foaming typically relates to detergents or organic matter in the water rather than lime use. Poor dispersion and heavy sedimentation can occur in various systems but are not defining characteristics of lime slurry handling. Hence, the issue of plugging is particularly relevant for operators working with lime slurry in wastewater treatment.